Sawing-machine and art of sawing ivory-nuts.



G. J. SPILL.

-AWING MACHINE AND ART OF S'AWING IVORY NUTS.

APPLIUATION FILED JULY 27, 1910.

Patented Dec. 13, 1910.

W $3. alien 101 I I UNITED STATES rATEN'r oFFIoE.

CHARLES J. SPILL, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO UNITEDBUTTON COMPANY, A CORPORATION OF NEW YORK.

SAWING-MACHINE AND ART OF SAWING IVORY-NUTS.

Specification of Letters Patent.

Patented Dec. 13, 1910.

Application filed July 27, 1910. Serial No. 574,024.

To all whom'it may concern:

Be it known that I, CHARLES J. Selim, a citizen of the United States;and resident of Springfield, in the county of I'lampden and State ofMassachusetts, have invented certain new and useful Improvements inSawing-Machines and Art of Sawing Ivory- Nuts, of which the following isa specification.

It is the practice to grade ivory nuts, before they are sawed,acctn'ding to their diameter This diameter has reference to thethickness or width of the nut. The length of the nut, however, varies,so that the major axis of nuts of the same diameter is not uniform.

l t has been customary in the art, as heretofore practiced, to dividethe nut by means of primary and secondary cuts. The primary cuts runsubstantially at right angles to the major axis of the nut, and thesecondary cuts run at an angle to the plane of the primary cuts. Bymeans of the primary cuts the up per and lower ends of the nut a resawed oil. The upper end of the nut contains the germ and cannot be usedand this entails a considerable loss of material. In a companionapplication I have disclosed amethod of dividing the nuts in such amanner that the germ end is nullified, by making a primary cut on a lineinclined with respect to the major axis of the nut, the said cut passingsubstantially through the germ end of-the nut.

The present invention has for its object a method of and means forpresenting the nut to the saw in such a manner that the inclined primaryout can be made.

.-\ccordingly the invention resides in a method of and means forpresenting an ivory nut to the saw inclined with respect to its majoraxis.

Tn carrying out this invention confining gages are used which are spacedapart a distance less than the minimum length of a given diameter of nutso that it is impossible for the nut to be presented to the saw at rightangles to the major axis of the nut,- andspaced apart a distance greaterthan a given diameter of nut. The nut is then placed between and inengagement with said gage surfaces with its length inclined to theplanes of said surfaces. The nut is then clamped in position and incontact with said i wise position between the gages and will begagesurfaces, and is then presented to a saw in av plane parallel to aidsurfaces.

The machine consists of a work holder for presenting the nut to the sawcomprisin confining gages spaced apart for positioning the nut and meansfor clamping the nut so as to permit it to adjust itself in an inclined'iositionbetween the gages, and a saw extending in a plane between 'theclamping means and one of the gages. W hen two saws are used they willbe spaced a distance apart less than the gages and greater than thewidth of the clan'lping means.

Other features of construction will as the specification proceeds. Inthe accompanying drawings, the invention is embodied in a concrete andpreferred forn'i, but changes of construction may be made withoutdeparting from the legitimate and intended scope of the invention.

In the said drawings: Figure 1 is a side elevation of a sawing machineembodying the invention, with the confining gages removed. Fig. 2 is avertical sectional view on the line 2-2 of Fig. 1.

Similar characters of reference indicate corresptmding parts in thediil'ercnt views.

3 is the \vorkholdc. comprising in this instance the disk 4 providedwith the notches 5 forming jaws and I aving opposite to each notch anidle jaw 6 pivoted at 7 and given a play by means of the slot 8 and bolt9 so as to permit the nut to adjust itself in an inclined position. it)is a movable jaw sliding up and down by means of the slot 11 and bolt'12 and normally held in-its closed position by means of the spring 13.This disk at is mounted on the shaft 14 driven in any suitable manner asby means of the worm '10 and worm gear 15.

17 is a fixed cam whose high point 18 :uitomatieally opens the jaw 10 byacting against the roll 11.) attached to t'he inner end of the jaw andsliding in the slot 20.

Two confining gages 21 and 252 are utilized moving with the disk 1; andspaced a distance apart which is less than the minimum length of. agiven diameter of nut. and greater than the diameter of the nut, andembracing the nut substantially at right angles to the jaws of theworkholder. Tn-

a p pen 1' this manner when the nut 23 is inserted in the jaws it. willbe forced to assume a slant:

presented inclined with 'pect to its major axis Qito the saw.

The rotary sawl' 1s suitably mounted on' the shaft 2 and driven in anysuitable manner'andconsists, in this instance, of two saw blades whichare parallel'to'the planes of the..eonfining' gages.- When one saw blade'tweenone'of the gages and the aws, and

when two sawa'blades are used they will be spaced apart ,t'-tlis tanceless than the gages and greater thanth'e'width of the jaws.

In practice the nut isp'lac'ed between the confinlng gages in apositioninclin'ed to fthe planes of said surfaces and incontaottherewith, The nut is then-clamped insaid positionand presentedto the sawi'n a plane parallel tosaid gage surfaces.

I What is elaimed 1s:

1. The improvement in the art of sawing ivory nuts which consists inproviding gage surfaces, spaced apart a distance greater than thediameter of the nut. and less than the length 5 thereof, the placing ofthe nut between and invengagement'with said surfaces with its lengthinclined to the planes of'said surfaces the; clampin ofthe nut in saidposition an in contact w th said gage surfaces, and the presentation ofthe nut toa saw in a plane faces. i

2. In a machlne for sawlng ivory nuts, a

parallel to said sur-,

work holder for presenting the nut to the saw comprising: confininggages spaced a art for positioning the nut and means for c amping thenut ,so as to permit it to adjust ltself in an inclined position betweenthe gages, and a saw extending in a plane between the clamping means andone of the gages.

8. In a machine for sawing ivory nuts, :1 work holder for presenting thenut to the saws comprising: confining gages vspaced Signed atSpringfield 1n the county of Hampden and State otMassachus'etts this 7thday of July A. D. 1910.

' v CHARLES ;J SPILL.

Witnesses:

EULAR B. Lana,

GURDON W. GORDON.

